Arria® 10 Transceiver PHY User Guide

ID 683617
Date 4/01/2024
Document Table of Contents Byte Deserializer Deserialize x2 Mode

The deserialize x2 mode is used in high-speed applications such as the PCIe* Gen1 or Gen2 protocol implementation, where the FPGA fabric cannot operate as fast as the TX PCS.

In deserialize x2 mode, the byte deserializer deserializes 8-bit, 10-bit (when the 8B/10B encoder is not enabled), 16-bit, and 20-bit (when the 8B/10B encoder is not enabled) input data into 16-bit, 20-bit, 32-bit, and 40-bit data, respectively. As the parallel data width from the word aligner is doubled, the clock rate is halved.